Customer Reviews For The First Alert SA305CN3 Long Life Battery Smoke Alarm (1039815)
Product Reviews
Very happy with this smoke detector. Cost-effective, simple, and reliable.
We have been buying this brand and model for many years. They almost always last 8 - 10 years on the original lithium ion battery, are very easy to install, and don't produce the false alarms that so many detectors do.
This basic smoke detector with a long life lithium ion battery is the only one we use in almost every room of our house. It's very affordable. We've been getting 8 - 10 years of life from the lithium ion batteries. The units almost never produce a false alarm beeping for something other than a true fire. They are also small and inconspicuous when installed, blending into the white ceiling. Will continue to purchase as long as First Alert makes them!
I have been buying this model for many years for my home and as gifts for the homes of family members. It is very easy to install, and the long life battery lasts many years 7 - 9 yrs in my experience, reducing the annoyance of changing batteries frequently.
I found this alarm to be an excellent value. The long-lasting battery easily compensates for the few extra dollars you'll pay over an alarm with a regular 6 month - 1 year battery.
Works great! I really like the 10 year lit-hon battery.
We have been installing this model in most rooms of our home for many years--always reliable, easy to install, and usually lasts the full 10 years. Very economical as well compared to comparable models from other brands.
Perfect!
Have used this model throughout our home for many years. Reliable and easy to install. Small, unobtrusive design makes it less noticeable compared to competitive models.
Tried to get these at local hardware stores & could only get three. So I went on first alert website, found the rest that I needed and ordered them. Prices were better than hardware store, easy to order and I got them right away. Very, very happy with first alert.
great smoke alarm
I have these alarms in my home and feel that FIRST ALERT Long Life Alarms are the BEST will use again!!!!
products are great, with the long life battery you can almost forget about them.
Looks like a winner.
fast delivery easy to install
I purchased 8 on these. Good value and timely delivery
Easy to install, easy to use, and maintenance free for years, cant ask for much else!
Excellent value and reliability. Pays for itself in savings on batteries over the life of the smoke alarm.
Very prompt delivery. Havent yet installed the alarm
Installation was quick and easy. Did a test with canned smoke - worked as advertised. Good price.
Product FAQs
Actual battery service life depends on the particular design of your smoke or carbon monoxide alarm and the environment in which it is installed. All kinds of alarm batteries specified in the user's manual are acceptable replacement batteries. Regardless of the manufacturer's suggested battery life, you MUST replace the batteries immediately once the unit starts "chirping" (the "low battery warning"). It is recommended that you change the batteries in your alarms when you change your clocks for daylight saving time. Also consider replacing your current alarms with 10-Year Life Alarms that never require a costly battery replacement for the ten year life of the alarm. This 10-Year series is available in smoke, carbon monoxide and combination alarms.
It is important that you have the proper placement for your smoke alarms. Install your alarms at least 20 feet from appliances like furnaces and ovens, which produce combustion particles. Alarms should be at least 10 feet from high humidity areas like showers and laundry rooms, and at least 3 feet from heat/AC vents. Be sure to install a smoke alarm in each bedroom, one at the top of each stairwell, and one on every level.
It is likely that the reason your smoke alarm keeps chirping and beeping is that the battery is low. Whenever your smoke alarm keeps chirping, replace the battery immediately.
Other reasons include: It could be a different device or appliance such as a security system, monitor, carbon monoxide alarm, or other device which has a similar low battery or alert signal. Some of the same factors that cause unwanted alarms can cause intermittent alarms: dust and insects in the alarm or power interruptions in hardwired alarms. Improper wiring on AC or AC/DC smoke alarms. AC alarms will chirp every 5 seconds if the interconnect wire is grounded. The orange interconnect wire should NEVER be grounded; it should only be used to interconnect other smoke alarms or compatible devices.
It is important that you frequently test your smoke alarms. When you are testing your smoke alarm, there are a number of reasons why the alarm might not sound:
- You may not be holding the test button down long enough. Try holding it down for up to 10 seconds (20 seconds on photoelectric models) .
- Your battery may not be installed properly or snapped all the way in place. Even if the alarm sounded briefly when the battery touched the terminals, you still need to make sure it is snapped securely in place. If the battery is loose, in cannot power the smoke alarm properly. After installing new batteries, be sure to test your smoke detector.
- Your AC power may not be on. AC and AC/DC units will have a power indicator light (red or green) that shines continuously when they are receiving electrical power.
- If you have a 10-Year model, the smoke alarm may not have been properly activated. If the tab broke away before the alarm was activated, you can use a toothpick to move the switch over to test the alarm.
It is normal for smoke alarms to go off and sound briefly (up to 5-10 seconds) when you install a new battery or when they are powered up. If the alarm continues to go off and no smoke is present, the cause may be one of the following:
- There may be insufficient battery power, try new batteries.
- Problems with voltage or insufficient electrical power (brown out) may cause a continuous weak sounding alarm. For AC or AC/DC models, temporarily disconnect power at the service panel until the brown out is over. If you do not restore the AC power, your smoke alarms cannot warn you of a fire.
- Incompatible warning device. If an incompatible alarm or auxiliary device is linked into a series of AC or AC/DC smoke alarms it may cause the system inadvertently go off.
There are a number of possible causes for your smoke alarm to keep chirping even with a new battery.
- It is possible that your smoke alarm "silence" button was pushed by mistake. The alarm will now "chirp" once a minute for up to 15 minutes before resetting.
- Are you sure it's the smoke alarm? Funny to ask, but other devices have similar low battery chirps or warning tones.
- Your "new" batteries may not be fresh. If batteries are stored, especially in cold areas like refrigerators, they lose their charge more quickly. Always check the freshness date on the package when buying new batteries. Keep plenty of replacement batteries on hand so that you are sure to always be protected by your smoke alarms.
First Alert smoke alarm owner's manuals are available online for download at no cost. Find your alarm in our Smoke Alarms section.
Smoke alarms have a limited life. Although each smoke alarm and all of its parts have passed many stringent tests and are designed to be as reliable as possible, any of these parts could fail over time. Therefore, you must test the devices weekly. The unit should be replaced immediately if it is not operating properly. The performance of smoke alarms older than 10 years is simply not reliable. To ensure your family's safety, all carbon monoxide and smoke/CO combination alarms need to be replaced every 5-7 years. All smoke alarms need to be replaced every 10 years.
If it's time to replace your alarms, consider the NEW 10-Year Life series and never have to worry about a battery replacement for the life of the alarm.10-Year alarms are available in smoke, carbon monoxide and combination alarms.
SA305CN3 Video Guide
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